My Top Ten Favorite Science Fiction Movies with Teratoma Creatures

A teratoma is a type of tumor that can contain fully developed tissues and organs, including hair, teeth, muscle, and bone. A dermoid cyst is similar — they can contain hair, teeth and toes/fingers.

Here are ten science fiction movies that have a teratoma / dermoid creature. Listed in no particular order. Note: This blog post was inspired by Jourdan McCaffrey. No, Jourdan does not have a teratoma growing out of her back, at least as far as I know.


1. Malignant (2021) – A young woman named Madison has visions of a killer. Is she insane or is it her parasitic twin Gabriel? I don’t usually like horror themed sci fi but this movie is pretty good. I give the movie a B+ grade.


2. How to Get Ahead in Advertising (1989) – This is a black comedy. An advertising executive named Denis grows a cynical new persona. This movie has somewhat of a cult following but I give it just a C+ grade.


3. Harry Potter and the Sorcerer’s Stone (2001) – This is the first movie in the Harry Potter series. Known as “Harry Potter and the Philosopher’s Stone” in the UK. Voldemort lives on the back of the head of Professor Quirinus Quirrell. Grade = A+.


4. The Incredible Two-Headed Transplant (1971) – A scientist adds the head of a psychopath to a mentally handicapped man. I give it a C- grade.


5. The Manitou (1978) – A woman named Karen has a large and growing tumor on her neck. It turns out to be an evil Native American shaman named Misquamacus. Good idea but weak execution. I give it a C grade.


6. The Manster (1959) – Mad Japanese scientist Dr. Suzuki, aided by his seductive assistant Tara, injects American news reporter Larry Stanford with a drug that causes an eye to grow on Stanford’s shoulder. Objectively not a good film, but it has a certain charm and I give it a B- grade.


7. The Thing with Two Heads (1972) – Wealthy Dr. Kirshner is dying but transplants his head onto convict Black Jack Moss. Some people like this movie a lot but I’m not a fan of it and give it a C- grade.


8. Total Recall (1990) – In 2084, construction worker Douglas Quaid goes to an evil mining operation on Mars and meets the resistance leader Kuato, a mutant growing out of the abdomen of his brother George. Great special effects but I don’t like ambiguous story lines so I give the movie a B+ grade.


9. Jack the Giant Slayer (2013) – Jack goes up the beanstalk and rescues princess Isabelle from of General Fallon, the two-headed leader of the giants. The movie is less than the sum of its parts and I give it a C+ grade.


10. The X-Files TV episode “Humbug” (1995) – FBI agents Mulder and Scully investigate a series of murders in a community of former circus sideshow performers. It turns out the killer is Lanny’s parasitic twin, Leonard, who is able to detach himself from Lanny’s body. I’m not a fan of this TV series but I liked this episode and give it a B- grade.


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